$ git clone -n https://src.fedoraproject.org/rpms/jaxb-dtd-parser.git /var/lib/mock/f38-build-side-42-init-devel-751926-27662/root/chroot_tmpdir/scmroot/jaxb-dtd-parser
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-751926-27662/root/chroot_tmpdir/scmroot/jaxb-dtd-parser'...
$ git fetch origin de14c765affbac9136967f4b12695bac46b3c7d7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jaxb-dtd-parser
 * [new ref]         de14c765affbac9136967f4b12695bac46b3c7d7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de14c76 Remove provision of glassfish artifact